Figure 2: Palaeoceanographic records from ODP Site 1098.
From: Temporal controls on silicic acid utilisation along the West Antarctic Peninsula
Records of δ30Sidiatom (this study) plotted alongside F. curta (sea-ice-associated taxa)40, clay/silt ratios from Southern Chile with higher ratios reflecting stronger Southern Hemisphere Westerly Winds43 and δ18Odiatom (glacial discharge)27 alongside TSI for 9.4–0.0 kyr (green line)44 and Greenland GISP2 ice-core 10Be for 12.1–9.4 kyr (dark orange line)45. Bottom panel displays changes in Si(OH)4 utilization under an open system model. Starred Si(OH)4 utilization data points were removed from any ordination analyses (n=6) (see Methods). Shaded/unshaded intervals indicate transitions between zones/subzones as identified by the hierarchical clustering of samples.
